Throttle Plate vs Throttle Pedal

[ran]

Hi,

I have encountered my throttle plate closing at high rpm ( 8400 onwards ).
Even though my pedal is at 100%.
It is fustrating as power is dropping after 8400rpm.
I am using J37 Throttle body.
Civic type R- asia model.
I attached the datalog for anyone who can help me on this.
Thank you

[R-12914]

Hi,

what is your entry in "Overall Limiter" in "Rev Limits" in the "Rev Limiter" and "Rev Limiter Recover"?
(The recovery rpm should be 0-300 rpm lower than the rev limiter!)

BTW: Please attach your Cal!

[Hondata]

There is probably an error condition which is causing the ECU to close the throttle, but it is too short to trigger the error code.

[ran]

My rev limits were original 8800rpm and recover 8600rpm.
I encounter P2101.
After which i limit to 8400rpm rev cut and 8200rpm recover, no issue.
Now i set to 9200rpm rev cut and recover 8900rpm..
so far as long as i change gear at 8400rpm...no issue.
Attached my calibration

[Hondata]

P2101 is the throttle body. The calibration will not affect it.

[Gernby]

I ran into this problem with my ITB's, and solved it by reducing the max throttle position in the table. I found that I had to set the max to 60 in the table, but the datalog still shows the throttle opening to 89%. Of course, I can see that the throttles are actually fully open.

[ran]

I ran into this problem with my ITB's, and solved it by reducing the max throttle position in the table. I found that I had to set the max to 60 in the table, but the datalog still shows the throttle opening to 89%. Of course, I can see that the throttles are actually fully open.

Thank you all,

You mean at WOT or 100% Pedal, i set the Throttle map to 60% right?

[Gernby]

The S2000 may be significantly different in the way the table values get applied, so you will need to experiment with the max value for your car. However, below is a screenshot of my throttle map and resulting datalog. Note that my actual throttle plate is 100% open when it shows 88% in the datalog.

Basically, 60 in the table results in 88 in the datalog, which is 100% on the actual throttle plate.